Base | Representation |
---|---|
bin | 111111100111000110… |
… | …100100101111011011 |
3 | 20112022001211101211202 |
4 | 333213012210233123 |
5 | 2104340223112231 |
6 | 51213303544415 |
7 | 4635403314611 |
oct | 774706445733 |
9 | 215261741752 |
10 | 68301769691 |
11 | 26a6a628551 |
12 | 112a215b10b |
13 | 659666a74c |
14 | 343d2716b1 |
15 | 1b9b4ab5cb |
hex | fe71a4bdb |
68301769691 has 2 divisors, whose sum is σ = 68301769692. Its totient is φ = 68301769690.
The previous prime is 68301769663. The next prime is 68301769693. The reversal of 68301769691 is 19696710386.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 68301769691 - 226 = 68234660827 is a prime.
Together with 68301769693, it forms a pair of twin primes.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (68301769693) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34150884845 + 34150884846.
It is an arithmetic number, because the mean of its divisors is an integer number (34150884846).
Almost surely, 268301769691 is an apocalyptic number.
68301769691 is a deficient number, since it is larger than the sum of its proper divisors (1).
68301769691 is an equidigital number, since it uses as much as digits as its factorization.
68301769691 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 2939328, while the sum is 56.
The spelling of 68301769691 in words is "sixty-eight billion, three hundred one million, seven hundred sixty-nine thousand, six hundred ninety-one".
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